doc.find('//osm/relation').each do |pt|
return Relation.from_xml_node(pt, create)
end
+ raise OSM::APIBadXMLError.new("node", xml, "XML doesn't contain an osm/relation element.")
rescue LibXML::XML::Error, ArgumentError => ex
raise OSM::APIBadXMLError.new("relation", xml, ex.message)
end
def self.from_xml_node(pt, create=false)
relation = Relation.new
- if !create and pt['id'] != '0'
- relation.id = pt['id'].to_i
- end
-
- raise OSM::APIBadXMLError.new("relation", pt, "You are missing the required changeset in the relation") if pt['changeset'].nil?
+ raise OSM::APIBadXMLError.new("relation", pt, "Version is required when updating") unless create or not pt['version'].nil?
+ relation.version = pt['version']
+ raise OSM::APIBadXMLError.new("relation", pt, "Changeset id is missing") if pt['changeset'].nil?
relation.changeset_id = pt['changeset']
-
- # The follow block does not need to be executed because they are dealt with
- # in create_with_history, update_from and delete_with_history
- if create
- relation.timestamp = Time.now.getutc
- relation.visible = true
- relation.version = 0
- else
- if pt['timestamp']
- relation.timestamp = Time.parse(pt['timestamp'])
- end
- relation.version = pt['version']
+
+ unless create
+ raise OSM::APIBadXMLError.new("relation", pt, "ID is required when updating") if pt['id'].nil?
+ relation.id = pt['id'].to_i
+ # .to_i will return 0 if there is no number that can be parsed.
+ # We want to make sure that there is no id with zero anyway
+ raise OSM::APIBadUserInput.new("ID of relation cannot be zero when updating.") if relation.id == 0
end
+
+ # We don't care about the timestamp nor the visibility as these are either
+ # set explicitly or implicit in the action. The visibility is set to true,
+ # and manually set to false before the actual delete.
+ relation.visible = true
pt.find('tag').each do |tag|
+ raise OSM::APIBadXMLError.new("relation", pt, "tag is missing key") if tag['k'].nil?
+ raise OSM::APIBadXMLError.new("relation", pt, "tag is missing value") if tag['v'].nil?
relation.add_tag_keyval(tag['k'], tag['v'])
end
return doc
end
- def to_xml_node(changeset_cache = {}, user_display_name_cache = {})
+ def to_xml_node(visible_members = nil, changeset_cache = {}, user_display_name_cache = {})
el1 = XML::Node.new 'relation'
el1['id'] = self.id.to_s
el1['visible'] = self.visible.to_s
self.relation_members.each do |member|
p=0
- #if visible_members
- # # if there is a list of visible members then use that to weed out deleted segments
- # if visible_members[member.member_type][member.member_id]
- # p=1
- # end
- #else
+ if visible_members
+ # if there is a list of visible members then use that to weed out deleted segments
+ if visible_members[member.member_type][member.member_id]
+ p=1
+ end
+ else
# otherwise, manually go to the db to check things
if member.member.visible?
p=1
end
- #end
+ end
if p
e = XML::Node.new 'member'
e['type'] = member.member_type.downcase
def add_member(type,id,role)
@members = Array.new unless @members
- @members += [[type,id,role]]
+ @members += [[type,id.to_i,role]]
end
def add_tag_keyval(k, v)
# provide repeatable reads for the used-by checks. this means it
# shouldn't be possible to get race conditions.
Relation.transaction do
+ self.lock!
check_consistency(self, new_relation, user)
# This will check to see if this relation is used by another relation
- rel = RelationMember.find(:first, :joins => "INNER JOIN current_relations ON current_relations.id=current_relation_members.id", :conditions => [ "visible = ? AND member_type='Relation' and member_id=? ", true, self.id ])
- raise OSM::APIPreconditionFailedError.new("The relation #{new_relation.id} is a used in relation #{rel.id}.") unless rel.nil?
+ rel = RelationMember.find(:first, :joins => :relation,
+ :conditions => [ "visible = ? AND member_type='Relation' and member_id=? ", true, self.id ])
+ raise OSM::APIPreconditionFailedError.new("The relation #{new_relation.id} is used in relation #{rel.relation.id}.") unless rel.nil?
self.changeset_id = new_relation.changeset_id
self.tags = {}
end
def update_from(new_relation, user)
- check_consistency(self, new_relation, user)
- unless new_relation.preconditions_ok?
- raise OSM::APIPreconditionFailedError.new("Cannot update relation #{self.id}: data or member data is invalid.")
+ Relation.transaction do
+ self.lock!
+ check_consistency(self, new_relation, user)
+ unless new_relation.preconditions_ok?(self.members)
+ raise OSM::APIPreconditionFailedError.new("Cannot update relation #{self.id}: data or member data is invalid.")
+ end
+ self.changeset_id = new_relation.changeset_id
+ self.changeset = new_relation.changeset
+ self.tags = new_relation.tags
+ self.members = new_relation.members
+ self.visible = true
+ save_with_history!
end
- self.changeset_id = new_relation.changeset_id
- self.changeset = new_relation.changeset
- self.tags = new_relation.tags
- self.members = new_relation.members
- self.visible = true
- save_with_history!
end
def create_with_history(user)
save_with_history!
end
- def preconditions_ok?
+ def preconditions_ok?(good_members = [])
# These are hastables that store an id in the index of all
# the nodes/way/relations that have already been added.
# If the member is valid and visible then we add it to the
# relation, then the hash table nodes would contain:
# => {50=>true, 1=>true}
elements = { :node => Hash.new, :way => Hash.new, :relation => Hash.new }
+
+ # pre-set all existing members to good
+ good_members.each { |m| elements[m[0].downcase.to_sym][m[1]] = true }
+
self.members.each do |m|
# find the hash for the element type or die
- logger.debug m[0]
hash = elements[m[0].downcase.to_sym] or return false
# unless its in the cache already
unless hash.key? m[1]
# use reflection to look up the appropriate class
model = Kernel.const_get(m[0].capitalize)
# get the element with that ID
- element = model.find(m[1])
+ element = model.find(:first, :conditions =>["id = ?", m[1]])
# and check that it is OK to use.
unless element and element.visible? and element.preconditions_ok?
- return false
+ raise OSM::APIPreconditionFailedError.new("Relation with id #{self.id} cannot be saved due to #{m[0]} with id #{m[1]}")
end
hash[m[1]] = true
end
end
return true
- rescue
- return false
end
# Temporary method to match interface to nodes
# changed members in an array, as the bounding box updates for
# elements are per-element, not blanked on/off like for tags.
changed_members = Array.new
- members = Hash.new
- self.members.each do |m|
- # should be: h[[m.id, m.type]] = m.role, but someone prefers arrays
- members[[m[1], m[0]]] = m[2]
- end
- relation_members.each do |old_member|
- key = [old_member.member_id.to_s, old_member.member_type]
- if members.has_key? key
- members.delete key
- else
+ members = self.members.clone
+ self.relation_members.each do |old_member|
+ key = [old_member.member_type, old_member.member_id, old_member.member_role]
+ i = members.index key
+ if i.nil?
changed_members << key
+ else
+ members.delete_at i
end
end
# any remaining members must be new additions
- changed_members += members.keys
+ changed_members += members
# update the members. first delete all the old members, as the new
# members may be in a different order and i don't feel like implementing
changed_members.collect { |id,type| type == "relation" }.
inject(false) { |b,s| b or s }
- if tags_changed or any_relations
- # add all non-relation bounding boxes to the changeset
- # FIXME: check for tag changes along with element deletions and
- # make sure that the deleted element's bounding box is hit.
- self.members.each do |type, id, role|
- if type != "Relation"
- update_changeset_element(type, id)
- end
- end
- else
- # add only changed members to the changeset
- changed_members.each do |id, type|
- if type != "Relation"
- update_changeset_element(type, id)
- end
+ update_members = if tags_changed or any_relations
+ # add all non-relation bounding boxes to the changeset
+ # FIXME: check for tag changes along with element deletions and
+ # make sure that the deleted element's bounding box is hit.
+ self.members
+ else
+ changed_members
+ end
+ update_members.each do |type, id, role|
+ if type != "Relation"
+ update_changeset_element(type, id)
end
end
projects / rails.git / blobdiff